Tidal encounters in star clusters perturb discs around young protostars. In Cuello et al. (2019a, Paper I) we detailed the dynamical signatures of a stellar flyby in both gas and dust. Flybys produce warped discs, spirals with evolving pitch angles, increasing accretion rates, and disc truncation. Here we present the corresponding observational signatures of these features in optical/near-infrared scattered light and (sub-) millimeter continuum and CO line emission. Using representative prograde and retrograde encounters for direct comparison, we post-process hydrodynamical simulations with radiative transfer methods to generate a catalogue of multi-wavelength observations. This provides a reference to identify flybys in recent near-infrared and sub-millimetre observations (e.g., RW Aur, AS 205, HV Tau & DO Tau, FU Ori, V2775 Ori, and Z CMa).
@article{arxiv.1910.06822,
title = {Flybys in protoplanetary discs: II. Observational signatures},
author = {Nicolás Cuello and Fabien Louvet and Daniel Mentiplay and Christophe Pinte and Daniel J. Price and Andrew J. Winter and Rebecca Nealon and François Ménard and Giuseppe Lodato and Giovanni Dipierro and Valentin Christiaens and Matías Montesinos and Jorge Cuadra and Guillaume Laibe and Lucas Cieza and Ruobing Dong and Richard Alexander},
journal= {arXiv preprint arXiv:1910.06822},
year = {2019}
}
Comments
11 pages, 5 figures, accepted for publication in MNRAS